my laptop tells to change the battery

[zylog]

recently i have updated windows 7 from windows vists since vsita occupies all my HDD space in to trash . after that once it was done it tells me to "consider changing the battery" but actually the battery is completely full . what could be the trouble in my laptop

[rubberman]

Over time, batteries wear out. Example - I have a battery for my Dell laptop that after several (about 5 years) only holds about 1/2 charge. When charged, it shows full power, but it only lasts for a short while before it is down to 5% power. This may be your problem. I think Windows 7 does a better job of monitoring battery life than Vista or XP.

[jingda]

You can try changing battery or don't use a battery but a power cord instead if you have one. Battery can be easily purchase and easy to replace yourself. What is your laptop model and number